Actuating mechanism



BEST AvAiBLE COP:

March 16 1926.

H. A. FOOTHORAP ACTUATI'NG MECHANISM U 11 Sheets-Sheet 1 Filed May 2, 1921 BEST AVAELABLE COP:

March 16 1 926.

' H. A. FOQTHORAP ACTUATING MECHANISM Filed May 2. 1921 11 sheets-sheet BEST AVAZLABLE COPE March 16 1926 1 1,576,960

H. A. FQOTHORAP ACTUATING MECHANISM Fild May 2, 1921 11 siaeetss 5 40 7 V J 7 /2 2 BEST AVNLABLE COP\ March-1e 1926. 4 1576,960

H. A. FOOTHORAP ACTUATING MECHANISM Filed May 2, 1921 lLSheets-Sht 4 BESTAVNLABLE COR March 16 1926 A. FOOTHORAP ACTUATING MECHANI SM 11 She'ets-Sheet .5

Filed May 2, 1921 to w WAT/5'0 EES? AVMLABLE CO? 5 March 16 1926.

H. A. FOOTHORAP ACTUATING MECHANISM Filed May 2, 1921 11 Sheets-Sht e \WLABL COPY March 16,1926. 5E8 1576960 H A FOOTHORAP ACTUATING MECHANISM Filed May 2, 1921 ll Sheets-Sheet gwwmto a w m v.

www Mu a La. 7 m W Wm y 0 .w 2 a 7% 4v BEST AV-AYLABLE CCDFE March 16 1926 1,576,960

H. A. FOOTHORAP ACTUATING MECHANI SM Filed May 2, 1921 ll Sheets-Sht 8 BEST AVNLABLE mm March 16 1926. 1,576,960

HJA. FOOTHORAP A'CTUATING mscmnlsy Filed May 2, 1921 11. Sheets-Sheet Mll-mplufl L I 9 b I I l BEST AVAILABLE Cam March 16 1926.

H. A. FOOTHORAP ACTUA'I'ING MECHANISM Filed May 2, ll Sheets-Sh't 10 BEST AVAILABLE COPE March 16,1926.

H. A. FQOTHORAP ACTUATING MEQHANI SM Filed May 2, 1921 11 Sheets-Sheet 11 i froni' the'; rea.r.',,.

Patented Mar. 16, 1926.

UNITED STATES LABLE cos. 1,57 ,9

PATENT OFFICE.

' HARRY ARTHUR roornom'r, or HARRISBURG, PENNSYLVANIA, fASSIGNOB T0 A ELLIOTT-FISHER comrAmr, A conrom'rrou or DELAWARE.

ACTUATIN G MECHANISM.

Application filed May 2,

T o all whom it may concern Be it known that HARRY A. FOOTHORAP, a citizen ofthe United States, residing at. Harrisburg, in the county of Dauphin and State of Pennsylvanim'has invented certain new and useful Improvements in Actuating Mechanism, of which the following is a specification, reference being had therein to,

the accompanying drawing.

This invention relates to an improved Writing adding machine and more particularljv to wh-at'is known'as the actuating mechanism.

The bject of the invention isto produce an actuating mec hanism' of maximum accuracy ,ofoperation and of such simplicity of onstructiomas will minimize the cost of manufacture and repair. To the'uccomplishn'ient of this general object, various objects of subordinate character w1 1l clearly appear asthe succeeding description IS de- \'cloped.;'-'=- 1,

In the accompanying drawings, 1 Figural isfa plan view-bf a -portion of an Elliot-t Fisher, machine equipped with my actuating"mechanism. 1 Y

' Figure 2 is-a scct'on on thehnc 22 of Figure 1 with a more or less diagrammaticv illustration of a register includedl.

Figure-3.'is; a'similar view on the line 3 3 of. Figure 1 withcertain-of {the parts in difie'rent positions. a

Figure. 4 .is. still another view of this characten, showing. a; non-pr nt key depressed. ,-..-I *igure .5.is, longitud nal section viewed "Figures to .11 inclusive are detailed views of the-mechanism for transmitting motion from a non-print. key to the master wheel, .and'including the master wheel stop pawl, the master whe'sl chcckpawl and thekey leyer return lock, the-key being shown inprogressive positions and the various other parts being correspondingly, posh.

' keys 3 the operation ofwlncheffects both Figures 'l l to 1'? inclusive are detailed views similar iu character to Figures 6 to 11, but" illustrating more articularly the actionof the driving paw lock arm, the. master wheel locating pawl and the-carriage lock, 3

Figures 1 8 to 23 inclusive are; detailed views. correspondin Ywith; .the two groups just describe ,but owing moreparticular- 1921. Serial No. 466,340.

ly the mechanism for controlling the carriage cscapement from the non-print keys -carriage step by step both transversely and longitudinally of the subjacent platen for letter and line spacing. For the pprpose of this disclosure it has been deemed suflicient to indicate the key levels 2 and the numeral I and letter keys 3 and 4. In rear of thecarriage and supported independently thereof are one or more registersor totalizers 5 equipped with a-series of denominational members 6 in the form of toothed wheels which are'rotated by what is known as actu ating, mechanism, to. totalize, and register the total, of numerical values as the numbers st00d,of course, that the members 6 occupy successive denominational positions and are associated with carrying mechanism which transfers value to the next higher-denomination when the limit of value of any given; rc ached during the denomination has been adding operation. The prlmary elementoftheactuating ,mechanism is a master wheel 7 mounted on and movable with the carriage 1 to succes-.

sive denominational positions and toothed asshownto mesh with successive denomnnv are printed on the sheet. It will be under-' tional membersG of the relatively stationary register 5. The master Wheel 7 is rotated in ditferent degree. by the respective numeral keys tounove thelcngaged denominational member a. number of steps or increments jcorrespondingto the value of the particular key operated. In addition to the numeral the printing and adding ofvalues, the mats ter wheel is also operatedhy non-print keys .8 which, as their name indicates, rotate the master wheel and operate out printing. Rising from the register. with- I the cover plate .9ofthe car riage 1 adjacent to the rear edge thereof,

- purpose ot v 'ber beneath a lug 33,011' the drivingarm 23..

BEST

AvAiLAeLE com unison a master wheel, 7, a master wheel stop ratchet 12 and a master wheel driving ratchet 137 Also mounted to rotate on the shaft 11, but independent of the master wheel, is a master wheel driving arm 14 having a driving pawl 15 arranged to engage the driving ratchet 13 for the purpose of driving the master wheel 7. The driving arm 14: has a toothed driving segment 16 meshing with an operating sector 17 formed at the rear end of an operating arm 18 fixed to a driving shaft 19 and oscillating there with. A spring 20 attached to a projection 21 on the shaft 19 holds the segment in its fully retracted position which is determined by the adjustment of a stop screw with which the operating arm 18 contacts. EX-

tended rearwardly from the driving shaft 19 are 'a series of driving arms 2:. These arms are graduated in length and correspend in number with a series of actuator key levers 2-l fulcrumed at their rear ends on brackets 25 and provided at their front ends with the non-print keys 8. The levers 2% are urged upwardly by spring pressed plungers 26 and are arrested in their fully elevated or retracted positions by a universal stop 27. The cooperative relation be-' tween each actuator key lever 24 and the ad jacent driving arm is effected by a pivoted? member 28 which, besides constituting a connection between the key lever and the driving arm dnring depression of the key, also serves as a key lever return lock which in sures with certainty against the possible return of the key lever' unless and until the associated parts of the actuating mechanism are also properly returned to normal position. The members 28 are located at vary: ing distances froin the alined fulcrunis oT-the levers 24 in correspondence with the varying lengths of the driving arms 23 and each is provided with a weighted portion 29 disposed horizontally and with a vertically disposed, but cam shaped slot 30. for the reception of a driving pin 31 extended laterally from the free end of the adjacent driving arm 23. The normal location of the slot and pin 30 and 31 (see Fig. 6) provides for sullicient lost motion of the key lever 24' prior to its engagement with the driving arm to cause slight pivotal ,movement of.- the pivoted member 28 on its axis for-the presenting a lug on said mem- This overlapping of the lugs 32 and con- I tinues during the remainder of the key stroke and forms .a key lever return lock which prevents the key lever .troin returning'to normal position except as the driving arm and-associated parts also return to normal .positiom -'Whe n, howeverrthe' driving arm has returned to normal position, the independent movement of the key lever et-the end of its retracting movementwhich cor-i from the actuator key levers 24, the cams coacting with the pins 36 to rock the shaft Bl and thus swing an arm=38 fixed to the shaft 3+1 and bifurcated'to engage a pin 39 projecting from the short end of a master wheel stop pawl'40 suitably mounted on a bracket extension 41' and arranged to-cn gage the master wheel stop ratchet 12 .for the purpose of preventing overthrow of the master wheel. To dog the master wheel in the opposite or rearward direction a check dog 42 is provided. This dog, which 15 pivotally mounted at .43 is provided with two engaging teeth 42 and 42 and is i'yieldingly urged into engagement withthe teeth of the driving ratchet'13' by a spring 41 The engaging stop faces of the teeth 42 and 42? are spaced apart about onehalf the distance between the engaging faces of "two'adjacent teeth of theratchet 13,;- This 1 1 a manner to prevent more backward movement than is re resented by one half of a tooth space-f iv For the purpose of positively holding the;

driving pawl 15 in engagement 'with' the, driving ratchet during-the operating mov nient, a driving pawl lock arm 45-having its results in checking-the driving ratchet in rear. end concentric with the driving'ratchet is disposed to coa'ct with "a projection 46 on the pawl'lz't The arm 45 is'fulcrumed at 47 and has an angular extension 48 provided with a pin 49 extended into an opening. 50

in an arm 5 L fixed to a transverse shaft 52." n The shaft fi2 is provided with 358F185 of depending arms 53 eachof-which is provided at its end with what is known as an operating cam.54 coacting witha cam 55 on the ad acent actuator key'lever.

an intermediate position. as shown in Fig The dri'ving pawl lock arm -45 normally occupies a shown in Figure 1310 confine the pawl duning theoperatingstroke and second, to' 'al osition considerably removed as shownfin ig'ure to prevent its interference with the driving pawl asthe latter ridesbackduring theret-r'action of the parts. Assnmated with this mechanism isa niaster wheel wardoverthe teeth of the driving ratchet- BEST AVAlLABLE COPE jection 59 extended from "the end of the arm 51. The pawl 56 is disposed to engage one end ot" a carriage lock lever (30 fulcrmned at (31, and connected at its opposite end to a draw 'rod (3;! extended downwardly into engagement with they carriage lock. Thus, when the master wheel is released by the witlnlrawal ot' the locatingpawl 56, the lever (30 will be swung to operate the carriage lock for the purpose of holding the carriage rigid during the'operation of the master wheel. It will now he observed thatthe initial movement of a' key lever in addition'to properly positioning; the lever re" turn lock and the driving pawl, as hereto-' forefdescrihed, will a'so bring the cam 55 on the key lever into engagen'ient with the. operating cam 54 to swing the arm 53. This will causethe shatt 52 to rock slightly for the purpose of swinging-thoarm 51' which will in turn swing the pawl 56 out of en-- gagement with the; master wheel, operate the carriage lock level" 60 and swing the driving pawl lock 45 into position to lock the driving pawl in the driving ratchet during the succeeding portion of the key stroke. The seqnence of operation ofthe parts just described will appear from consideration of Figures 14 to17, attention being di-' reeted to thefaet that since the locating pawl 56 is constantly urged toward its engaging position by a spring 63 it will instantly return to ts active-or engaging position as soonfias the, cam155 has passed out of engagement "with the operating cam 54. whicln'howeveiyis positively operated by the can]. oi'ras thekey lever rises, to positively swing the locking arni 45 to a position shown in .Figurelfi, in which it. will offer no resistance tothe retraction of the driving pawh Referringrnow; moreparticularly to Fignres 18 to 23.,- tns desirable todog certain or all of the key .evci's (l1n'ing the retraction thereoi to prevent their downward or operative movement until the retraction has heen'eompleted. To do this, the lever is provided with a ratchet 64 depending below the same to be engaged bya key lever ratchet 1001(65 in the form of a pawl having a rule joint connection 66 with an arm (37 secured to the shaft '52. The lock 65 is pressed forwardfby a spring 68 into aline-- .inent-with the arm 6?,but is'permitted toy eld back a 'eg ns the resi t c of said spring. Normally, the ratchet 6% is located somewhat above the engaging -tooth of the lock (55 as it. moves down during the initial depression of the key. It will not engage the lock for the reason that the lat- 70 ter is swung back by oscillation of the shaft 52 as the latter is rocked by the coactlhn of the operating cam Til and the canr55 on the key lever. When, however, the key lever completely operated and the cams disen- '1 'gaged, the rocking of'the shaft 52 back to normal position, in the manner heretofore described, will swing the lock against the upper portion of the ratchet and in position to engage successive teeth of the ratchet asthe lever rises. As the lock is held in engagement by the spring 68 it will coact with the ratchet to resist. an effort to depress the key until the latter has been completely retracted and the cams brought into their proper normal relation.

In this group of figures of the drawings is also shown the action of the mechanism by means of which the carriage escapement is operated by the operation of the nonprint keys. An escapement connecting'wire' (39 is extended upwardly above the cover plate and has an adjustable head 70 normallv located above the adjacent end of a hell crank lever 71 slotted to receive the wire. 1 The other end of the lever/I1 has a pin 72 engaged by the bifprcated end of an arm 73 extended from a rock shaft 74. The shaft 74 is also provided with a series of arms 75, each equipped with an adjustable 1 pin 7 (S'en'gaged by one of a series of hooks 77 formed on the key levers 24. When a kev is depressed the book 77 will swing' the arin 7 5 to rock the shaft 74 causing the arm 73to swing the bell crahk 71: At the proper point in the keystroke theheadTO of the wire 69' will be engaged by tlie-bellcrank and raised to shift the 'escapement dogs in. S.

a manner well understoodin the art. hen

the keyis allowed to ri'se,tliebell crank is shifted in the opposite direction to permit the eseapeinent to let off land the carriage to move to the next denominational PQSIt-IOII.

Connection between the "levers '24 hot the actuator and the'nunieral' key levers 2of.

the printing mechanism-1s ettected by means of'links-"ZS provided at theiifcnds with pins 79 underlying hooks 80 on the'levers 2. This form of connection perm tsthe opera-' tion ofthe actuating mechanism by either the non-print keysindependently, or 'by the numeral'keys 3 acting through the'lipks 78 to operate the actuating mechanism as the numerals are printed. The links 78 are swung into and out of cooperative; relation 12 with the hooks 80 by key connecting mechanism which, for the purpose of the'present disclosure, need not mechanism, however, is shown' and is In tended tw e '91 t e e n e tien betw en the be described. This BEST AVAlLABLE COP;

numeral keys and the actuating mechanism.

' It is thought that from the regoin'g the v construction an operation of the illustrated Y actuating mechanism will be clearly understructure as may come fairly .scope 'of the 'stood, but I reserve the right to effect modi-v fications and variations of the illustrated within the protection prayed; jlVhat I- claim is:

1. In an actuating mechanism, the combination with a master wheel,of aseries of actuator levers having aligned fulcrums,

[and aligned series of driving-arms, a single operating connection between the-seriesof driving arms and the master-Wheel, and a connection between the actuator leversand the driving arms, said connection permitting the operation of the driving armsby any lever, and the movement of the dri'ving'z'i rms independently of the other levers.

2. In an actuating mechanism, the comhih'ation with amaster wheel, a driving fshaft, a ,graduated 3:0; adjacent lever, the driving arm I to transmitmotion from the leversto the 'bination with a master rvheel, of

biiia-tion with a master wheel, of

neetion'betweensaid shaft and the master wheel, a series. of -actuator levers, and a connection between 1 drrvingvarms,

the actuator levers and lever return lock which will. permit any driving arm to move independently of thebut will-lock any levertooperatedthereby, in'a manner. to compel their retraction in unison. ,B iIn an actuatmgmecha'nism, the comshaft, an'operatlngconnection between the rdrifving'shaft and thefmaster Wheel, a graduated series of driving arms extended :from

a drivingconnection includinga; pawl carrying driv ing arm, a rock shaft extended across the series of levels and-opera-tively connected to the stop iawl, a series charm extended from the shaft, and a series ofcams carried by thelevers .t'o'engalge' s'a'd arms for vthe 1 purposeof rockingithe shaft to throw the series of drivingarms. ex tended from'said shaft, an operating con .said connection SQl'ilIlg as a.

the .drivj n1 shaft, :1 series of actuator levers havingr'nlined fulcrums, and a'series 10f p voted lever return locks mounted on :the lwxejfs and reacting with the driving arms arms, and to prevent the independent retraction of th levers,

4. In an iictuating nlerhanisi-i'l, the comshaft, an'operating connection between the driv ng shaft and'the master wheel, a. series of driving arms.extended-from the shaft. a

series of actuator levers, pivoted return locks carried hyithe levers and'each provided with a cam'slot, and a lag "each driving arni, said pin extending into the return lock to hinalion with-a master wheel. a stop pawl.

said cam slot, and

v a lag carried by each (having arm and coacting'with the lug of prevent the return or'retraction of any lever independently of the driving arm operated thereby.

In an actuating mechanism, the comtherefoiz aseries of actuator levers, an'opcrating connection between the actuator levers and the master Wheel, said operating a drivi n and pin extended from .an actuator lever.-

bination, ,ivith stop pawl' into-pos1tion toarrest the master Wheel. V h

In an actuati g mechan sm, the combination with a m terwheel, driving ratchet and drivln pawl, 10f a driving pawl lockarm disc nnectedfrom the pawlbut movable into [and out 0f" position to lock the driving pafivl in the ratchet during the operating movement.

a 7. In an actuatin'g'mechanism, the combination with a master wheel, its driving 'ia-tchet and driving pawl, of a series of actuator levers, means for. causing the movemen ofsaiddevers to drive the ratchet throughthe medium of the pawl, a driving. pawl lock'arm, mo.vable into and out of p'o sition to lock the .pav'vl in the ratchet, and means operated by the. levers to control the move'men't'of the lock arm. l '8; In aniL-actuating mechanism, the combinationwith a mz'isterjvvheel, "a driving awl, of a series of a v driving pawl' lock arm ratchet and d riving,- actuator levers,

1 mov'ableto-lockthe pawl in theratchet dur- 9, In an actuating to the lock arm to move the 'same,- a series of arms extended from the rockshaft and each provided with an operating cam, and a cam carried by each .of'the actuator levers, and enacting .ivith the o crating cams to control the movement of t to lock 'arn'i.

It). In an actuating mechanism, the combination with a master wheel, of driving and locating pau'ls therefor, a series of actuator, levers arrangedtorotate the master wheel, through the medium of the drivingipanrl,

, and a cam lnechanisn'i operatedhy thc levers ratchetand driving to control'the locating pawl.

I 1L In an actuating mechanism, the combination with amaster Wheel, its driving pawl. of a driving pawl lock arm movable into and out of position to lock the pawl but disconnected from said pawl, a master \vheel locater movable into 5 and out of position to locate'themaster wheel. a series...of,aetuat-or levers to rotate the master wheel through the ined' lllll of a. cam mechanism the drivin awl and g P thelock operated by said levers to control arm and lo'cater.

12. In an actuating mechanism, the comcarriage lock, a universal shaft extended.-

across the levers, and a connection between said shaft and the escapement lever and' be tween said shaft and each of the actuator levers.

- 14. In an actuating mechanism, the combination with a master wheel,"and a series of actuator levers therefor, each provided with a return ratchet, of a. return lock coacting with each ratchet, and means including a rock shaft operated by each lever for moving the return locks out of interfering relation with the ratchets during the operating movement of the levers.

15. 'In an actuating mechanism, the combination with a master .wheel, of a plurality of actuator levers having a return ratchet, of a rock shaft, a retur" lock-carried by the rock shaft for each'leturn ratchet, and

a series of arms carried bythe shaft and operated by the levers to control the locks.

16. In an actuatin; mechanism, the combination with a master wheel, and operating mechanism including an actuator lever, a

to engage the master wheel, carriage.

ratchet carried by said lover, a lock coacting with the ratchet, a rock shaft controlling the movement of the lock, an arm extended from said shaft, and coacting cams carried by the arm and lever respectively.

17. In an actuating mechanism, the'co'mbination with 'a master wheel, of an aligned series of actuator-levers, and aligned. series of driving arms of graduated lengths, an

operating connection between the driving arms and the master wheel and a connection between each actuator lever and one of the driving arms, said connection normally permittin the operation of the driving arm indepen ently of the.lever but serving, when the actuator lever is operated, to establish an interlocked connection between the leverand the arm which will compel their retraction in unison.

18.' 'In an actuating mechanism, the combmation with a master wheel, driving ratchet and driving pawl, of means for moving the driving pawl into engagement with the ratchet and for driving the ratchet through the medium of the pawl, and a driving pawl lock arm normally but of cooperative relation with the driving pawl but movable into position to lock the driving pawl in the ratchet during the operating movemerit of thepawl.

19. In an actuating mechanism, the combmation with a masterwheel of, a locater movable relative to said wheel, ,a series of moving the locater throng evices adapted for levers,-and carriage lock operation through movement of the locater.

In testimony whereof I hereunto -aiiix my signature. HARRY ARTHURFOOTHORAP.

"actuator levers,'operatin connections for. actuation of the 

